Die and die-block.



No. 868,325. PATENTED OCT. 15, 1907.

, M. S. GARNEGIE.

`DIE AND DIE BLOCK.

APPLIOATION FILED AUG. 17, 1906.

M I attofmu UNITED STATES PATENT OFFICE.

DIE AND DIE-BLOCK.

Specification of Letters Patent.

Patented Oct. 15, 1907.

Application iiled August 17,1906. Serial No. 330,981.

. To all whom it may concern:

' Be it known that I, MARTIN SHERIC CARNEGIE, a citi-` zen oi the UnitedStates, residing at Donora, in the county of Washington and State ofPennsylvania, have invented new and useful Improvements in Dies andDie-Blocks, of which the following is a specification.

This invention is an improved die and die block for nail makingmachines. i v

The object of the invention is to orm a die having a plurality ofworking sides or faces, so that when one becomes worn out it canhbeturned to present another face.

A further object of the invention is to save a large amount of cast orhard steel, in proportion to the life of the dies. l

A further object oi the invention is to provide improved means forholding the newly invented dies i the die block` A The invention isillustrated in the accompanying drawings, in which Figure l is a faceview of the die block. Fig. 2 is an end view thereof, Fig. 3 is a topview. Fig. 4 is a perspective view oi one of the dies.

Referring specifically to the drawings, 6 indicates the die block ofknown nail making machines. The face oi this is recessed to receive thedies and the gibs holding the same. One oi the dies is relatively iixed,and the other reciprocates in a well known manner.

In the old construction, it is common to have a pair oi dies consistingol' pieces of cast steel several inches long, held between the gibs,with only one working face at the end. In my newly invented constructionthe die, 7, is made of a cube oi cast steel, having an intaglio or nailgroove S in each of its faces, thereby forming an equivalent oi sixdies, so iar as'uthe life of the die is concerned. Of course, a pair ofthe dies are used, and the intaglios may be Inatched up to suit nails ofdifferent sizes. One of these dies is held in a recess in a block 9which is set in the die block and held by a cross screw 10 and a gib 11pressed by top screws 12 and cross screws 13. The block 9 backs againstan adjusting screw 14 in the end oi the dieblock, which can be set up toadjust the position of the block. The die is held in its recess by thegib 11.

The movable die is carried by a reciprocating block or holder l5, in arecess in the trent end thereof. This block is dove-tailed into the dieblock under a gib 16 held by top and Vcross screws 17 and 1S. This gibis short, to allow room ier an upper extension 19 on the iront end ofthe die holder 15. This extension projects into a recess 20 in the topoi the die block, and `is tapped vertically to receive an extra screw 21the oot of which bears down upon the die 7 and so holdsithe same inplace. The die holders 9 and 15 are dove-tailed into the die block, asusual, and are made oi soft steel. Only the dies proper need behardened, and different dies may be-substituted in thesame holders,according to the work. The dies being formed with six working facesgives them'six times the liie of the ordinary dies, with also a largesaving in material.

In practice, with the old construction, in order to change or replacethe dies, it is necessary to disconnect the pusher7 or actuating devicefor the movable die, and also to'take, out all the top and cross screwsand gibs in the. die block; in other words, to unship the whole block.It will be understood that when the die block is put in place in anail-making machine it is so surrounded by other parts that with the oldstyle form of dies and die holder it is practically impossible to get atthe dies for removal thereof without taking it apart as above indicated.But with this new construction, it is only necessary to ease off thefront screw l2 to loosen the fixed die 7 and tol ease off the screw 2lto loosen the movable die, these screws being readily aecessible'at thetop of the block; then, the dies can be picked out laterally and removedthrough the space between the die block and the cutters, which latterare directly opposite or in iront oi the dies. And new dies can beinserted in the same manner, the whole operation requiring only themanipulation of two screw's, instead of several times that many,'and thedisconnection and reconnection of the pusher, and displacement of thedie block, as with the old kind oi dies now in general use.

I claim:

l. 'lhe combination of the die block G having a main recess in the facethereof, and a branch recess 20 extending laterally from said recess, apair of relatively fixed and movable die holders S) and 15 held in themain recess, the movable die holder 15 having a projecting part 19extending into said recess 20, and a screw 2l extending; through saidprojecting part and arranged to clamp a die in the holder, said screwbeing movable with the holder and projecting in the recess 20.

2. The combination of the die block having a main recess in the facethereof and a branch recess extending from one side of said recessthrough the adjacent side of the block, a tixed die holder secured inone end of said recess, a movable die holder slidable in the other endof the recess,

i dies removably held in the adjacent ends of the holders, and a screwextending through said branch recess into the movable holder, andbearing at its foot against the die therein.

3. The combination of a die block having a main recess in the facethereof, and a branch recess extending laterally from said recessthrough a side of the block, a fixed die in the main recess, a movabledie holder in the main recess, a die in said holder, and a clamping,-screw extending into the holder and bearing at its foot against the dietherein, and operating through said branch recess.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MARTIN SHERIC CARNEGIE.

Witnesses i CLYDn T. LEWIS,

C. J. Canxnem.

